Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
0900106heavily pollutedgood251excellent
0800106heavily pollutedgood241excellent
0700119heavily pollutedgood261excellent
0600117heavily pollutedgood241excellent
0500104heavily pollutedgood211excellent
0400105heavily pollutedgood211excellent
0300108heavily pollutedgood221excellent
0200114heavily pollutedgood271excellent
0100124severely pollutedgood231excellent
0000128severely pollutedgood261excellent
2300145severely pollutedgood311excellent
2200148severely pollutedgood301excellent
2100170severely pollutedgood331excellent
2000164severely pollutedgood331excellent
1900142severely pollutedgood291excellent
1800164severely pollutedlightly polluted371excellent
1700186severely pollutedlightly polluted401excellent
1600158severely pollutedgood361excellent
1500160severely pollutedlightly polluted371excellent
1400153severely pollutedlightly polluted381excellent
1300149severely pollutedgood351excellent
1200141severely pollutedgood331excellent
1100125severely pollutedgood281excellent
1000105heavily pollutedgood241excellent